Single-Chain Magnets Based on Octacyanotungstate with the Highest Energy Barriers for Cyanide Compounds | Zendy

RongMin Wei | Zendy; Fan Cao | Zendy; Jing Li | Zendy; Li Yang | Zendy; Yuan Yuan Han | Zendy; Xiuling Zhang | Zendy; Zaichao Zhang | Zendy; XinYi Wang | Zendy; You Song | Zendy

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Single-Chain Magnets Based on Octacyanotungstate with the Highest Energy Barriers for Cyanide Compounds

Author(s) -

RongMin Wei,

Fan Cao,

Jing Li,

Li Yang,

Yuan Yuan Han,

Xiuling Zhang,

Zaichao Zhang,

XinYi Wang,

You Song

Publication year - 2016

Publication title -

scientific reports

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.24

H-Index - 213

ISSN - 2045-2322

DOI - 10.1038/srep24372

Subject(s) - cyanide , magnet , chain (unit) , energy (signal processing) , computer science , chemistry , physics , engineering , mechanical engineering , inorganic chemistry , quantum mechanics , astronomy

By introducing large counter cations as the spacer, two isolated 3, 3-ladder compounds, (Ph 4 P)[Co II (3-Mepy) 2.7 (H 2 O) 0.3 W V (CN) 8 ]·0.6H 2 O ( 1 ) and (Ph 4 As)[Co II (3-Mepy) 3 W V (CN) 8 ] ( 2 , 3-Mepy = 3-methylpyridine), were synthesized and characterized. Static and dynamic magnetic characterizations reveal that compounds 1 and 2 both behave as the single-chain magnets (SCMs) with very high energy barriers: 252(9) K for 1 and 224(7) K for 2 , respectively. These two compounds display the highest relaxation barriers for cyano-bridged SCMs and are preceded only by two cobalt(II)-radical compounds among all SCMs. Meanwhile, a large coercive field of 26.2 kOe ( 1 ) and 22.6 kOe ( 2 ) were observed at 1.8 K.

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